Kha'zix Man...

I thought Riot was trying to give assassins longer burst windows, and more counter play. So how exactly did the abomination known as Kha'zix slip through the cracks??? The instant he's on you he's already done over half your hp, and that's if he's not fed. Even if you flash away you'll probably still die because his jump has like no CD, so he can just wait a second then jump and finish you off. Plus he has the mechanic we all know and love, STEALTH. Like c'mon Riot!